公开(公告)号：US20180159329A1

公开(公告)日：2018-06-07

申请号：US15576949

申请日：2015-05-27

Applicant: Hitachi, Ltd.

Inventor： Efrain Eduardo TAMAYO RUIZ ,  Shuji KATOH ,  Shinya OOHARA ,  Shigenori INOUE ,  Tohru YOSHIHARA

IPC: H02J3/28 ,  H02J3/24 ,  G05B13/02 ,  H02J3/10 ,  H02J3/38

CPC classification number: H02J3/28 ,  G05B13/021 ,  H02J3/00 ,  H02J3/005 ,  H02J3/10 ,  H02J3/24 ,  H02J3/382 ,  H02J13/001 ,  H02J13/0062 ,  H02J2003/007 ,  Y02E60/76 ,  Y02E60/7838 ,  Y04S10/40 ,  Y04S40/124 ,  Y04S40/22

Abstract: Conventionally, optimum introduction assistance for devices including a FACTS device and a storage adapted to changes in impedance and a transmission capacity involved in an increase of renewable energy power supplies has not been achieved. Therefore, in order to solve the problem, the present invention provides a power system equipment introduction assistance device that calculates an introduction point of power system equipment coupled to a power system, the introduction assistance device including a calculating unit configured to calculate, on the basis of predetermined system information and information concerning the power system equipment scheduled to be introduced, a characteristic of the power system affecting the power system during the introduction of the power system equipment and calculate the introduction point of the power system equipment from a predetermined evaluation index related to the characteristic of the power system.

公开(公告)号：US20140169048A1

公开(公告)日：2014-06-19

申请号：US14186364

申请日：2014-02-21

Applicant: Hitachi, Ltd.

Inventor： Shigenori INOUE ,  Shuji KATOH ,  Jun NARUSHIMA ,  Tetsuya KATO

IPC: H02M7/219

CPC classification number: H02M7/797 ,  H01F27/42 ,  H02J3/1857 ,  H02J3/36 ,  H02M1/08 ,  H02M7/217 ,  H02M7/219 ,  H02M7/5388 ,  H02M2001/0009 ,  H02M2007/4835 ,  Y02E40/26 ,  Y02E60/60

Abstract: A power conversion device is provided which includes a plurality of series circuits each formed of a voltage source and a controlled current source. At least two of said series circuits formed of the voltage source and the controlled current source are connected in parallel. Further, parallel connection points of the series circuits connected in parallel form output terminals.

Abstract translation: 提供一种电源转换装置，其包括多个串联电路，每个串联电路由电压源和受控电流源形成。 由电压源和受控电流源形成的至少两个串联电路并联连接。 此外，并联连接的串联电路的并联连接点形成输出端子。

公开(公告)号：US20130148392A1

公开(公告)日：2013-06-13

申请号：US13706638

申请日：2012-12-06

Applicant: Hitachi, Ltd.

Inventor： Shigenori INOUE ,  Shuji Katoh

IPC: H02M7/10

CPC classification number: H02M7/10 ,  H02M1/32 ,  H02M7/483 ,  H02M2001/0003 ,  H02M2001/0064 ,  H02M2007/4835

Abstract: A power conversion device includes at least two legs connected in parallel each of which includes at least two unit converters connected in series, wherein at least one of the legs is formed using at least two kinds of unit converters including a first type unit converter capable of outputting a unipolar voltage and a second type unit converter capable of outputting a bipolar voltage.

Abstract translation: 电力转换装置包括并联连接的至少两个支路，每个支路包括至少两个串联连接的单元转换器，其中使用至少两种单元转换器形成至少一个支脚，所述至少两种单元转换器包括能够 输出单极电压和能够输出双​​极性电压的第二类型单位转换器。

公开(公告)号：US20140016379A1

公开(公告)日：2014-01-16

申请号：US13938996

申请日：2013-07-10

Applicant: Hitachi, Ltd.

Inventor： Takayoshi YAMAMOTO ,  Masaya ICHINOSE ,  Akira BANDO ,  Shigenori INOUE ,  Toru YOSHIHARA

IPC: H02M5/44

CPC classification number: H02M5/44 ,  H02M7/483 ,  H02M2007/4835

Abstract: A control apparatus for use with a voltage source converter includes legs each of which is configured by a plurality of converter modules each having capacitors. Each of the legs has a first terminal on a positive side and a second terminal on a negative side. The control apparatus is operative to create command pulses for operating the converter modules to operate the converter modules. The command pulses have a frequency that is a non-integral multiple of a frequency of a system voltage. The non-integral multiple is 3.5, for example.

Abstract translation: 一种与电压源转换器一起使用的控制装置包括由每个具有电容器的多个转换器模块构成的支脚。 每个腿部具有正侧的第一端子和负极侧的第二端子。 控制装置用于产生用于操作转换器模块以操作转换器模块的命令脉冲。 指令脉冲的频率是系统电压频率的非整数倍。 例如，非积分倍数为3.5。

公开(公告)号：US20140211528A1

公开(公告)日：2014-07-31

申请号：US14159530

申请日：2014-01-21

Applicant: HITACHI, LTD.

Inventor： Shigenori INOUE ,  Shuji KATOH ,  Yasuhiro KIYOFUJI ,  Makoto KADOWAKI ,  Hiroyuki FUJITA ,  Hideki OGATA

IPC: H02M7/797

CPC classification number: H02M7/797 ,  H02J3/36 ,  H02M2007/4835 ,  Y02E60/60

Abstract: A power conversion apparatus including a three-phase transformer having at least four three-phase windings, and three converter arms each configured by connecting one or plural unit converters each including a switching device and an energy storage element in series. A power source or a load is connected to a first three-phase winding of the transformer, three series circuits which connects second and third three-phase windings of the transformer, and the converter arms in series with each other are connected in parallel, the parallel connection point is a DC terminal, and a magnitude relationship between a coupling coefficient of the first and second three-phase windings, and a coupling coefficient of the first three- and third three-phase windings is equal to a magnitude relationship between a coupling coefficient of the fourth and second three-phase windings, and a coupling coefficient of the fourth and the third three-phase windings.

Abstract translation: 一种电力转换装置，包括具有至少四个三相绕组的三相变压器，以及三个转换臂，其通过将包括开关装置和能量存储元件的一个或多个单元转换器串联连接而构成。 电源或负载连接到变压器的第一三相绕组，连接变压器的第二和第三三相绕组的三个串联电路和彼此串联的转换器臂并联连接， 并联连接点是DC端子，并且第一和第三三相绕组的耦合系数与第一三和三相绕组的耦合系数之间的大小关系等于耦合的大小关系 第四和第三三相绕组的系数，以及第四和第三三相绕组的耦合系数。

公开(公告)号：US20140078796A1

公开(公告)日：2014-03-20

申请号：US14012456

申请日：2013-08-28

Applicant: Hitachi, Ltd.

Inventor： Shigenori INOUE ,  Shuji KATOH ,  Akira BANDO ,  Yasuhiro KIYOFUJI ,  Yoshio EGUCHI ,  Masaya ICHINOSE ,  Takayoshi YAMAMOTO

IPC: H02M7/217

CPC classification number: H02M7/2173 ,  H02M5/10 ,  H02M5/4585 ,  H02M7/483 ,  H02M7/5388 ,  H02M2007/4835

Abstract: In the present invention, provided is a power conversion apparatus in which at least one energy storage element and at least one switching element are included, a plurality of series circuits of a transformer winding and an arm in which one or a plurality of at least two-terminal unit converters which depend on ON/OFF of the switching element and supply a zero voltage or a voltage depending on a voltage of the energy storage element are connected in series are connected in parallel, and a multi-phase power source or a multi-phase load is connected to another winding of the transformer, and the parallel-connection point is set as a DC terminal, and which includes means for controlling a current flowing through each of the arms to have a phase and amplitude different from each other.

Abstract translation: 在本发明中，提供了一种功率转换装置，其中至少包括一个能量存储元件和至少一个开关元件，变压器绕组和臂的多个串联电路，其中一个或多个至少两个 依赖于开关元件的导通/截止并且提供依赖于能量存储元件的电压的零电压或电压串联连接的终端单元转换器并联连接，并且多相电源或多 相位负载连接到变压器的另一个绕组，并联连接点被设置为直流端子，并且其包括用于控制流过每个臂的电流以具有彼此不同的相位和幅度的装置。

公开(公告)号：US20130208519A1

公开(公告)日：2013-08-15

申请号：US13763004

申请日：2013-02-08

Applicant: Hitachi, Ltd.

Inventor： Takayoshi YAMAMOTO ,  Masaya ICHINOSE ,  Akira BANDO ,  Keiichi YAMASHITA ,  Shigenori INOUE ,  Toru YOSHIHARA ,  Yoshio EGUCHI ,  Osamu SAKUCHI ,  Shuji KATOH ,  Tomomichi ITO

IPC: H02M7/12 ,  H02M7/48

CPC classification number: H02M7/12 ,  H02M7/217 ,  H02M7/48 ,  H02M7/483 ,  H02M2001/0006 ,  H02M2007/4835

Abstract: A switching element of a power converter generates a low voltage, using a current flowing in the power converter, and supplies a power to drive itself. A switching element of a power converter for conversion from direct current into alternate current or from alternate current into direct current includes: a terminal and a terminal which are used in building the switching element itself in the power converter; a capacitor, a high-side controllable switch and a low-side controllable switch enabling outputting the voltage of the capacitor, the voltage being output between the terminal and the terminal, and a self-supply power source for supplying a power to drive the bi-directional chopper switching element itself, using a current flowing in the capacitor.

Abstract translation: 功率转换器的开关元件使用在电力转换器中流动的电流产生低电压，并且提供驱动自身的电力。 用于从直流转换成交流电流或从交流电流转换为直流的功率转换器的开关元件包括：用于在功率转换器中构建开关元件本身的端子和端子; 电容器，高侧可控开关和低侧可控开关，其能够输出电容器的电压，在端子和端子之间输出电压，以及用于提供电力以驱动双极的电源 双向斩波开关元件本身，使用流过电容器的电流。